Quarter‑Skelly (Ref. QS100) is a limited edition of 100 pieces featuring a hand‑skeletonized Unitas 6498 manual‑wind calibre executed by Jochen Benzinger. The plates and bridges are engraved and guilloché‑cut on a rose engine in Pforzheim, Germany, exposing the barrel, gear train and escapement. Frosted sterling‑silver chapter rings for the hours and small seconds are mounted above the open base plate. The 41 mm stainless steel case is machined and finished in Maryland and fitted with sapphire crystals front and back. Each watch is assembled, adjusted and numbered by Towson watchmakers. Production has ended; remaining pieces are archive stock.